.tree-nav .nav {
    display: none;
}

.tree-nav .active > .nav {
    display: block;
}

.tree-folder,
.tree-indent,
.tree-item {
    position: relative;
    top: 1px;
    display: inline-block;
    height: 1em;
    width: 1em;
}

.tree-folder,
.tree-item {
    margin-right: 6px;
}

.tree-nav .active > a .tree-folder:before {
    content: "\e118"; /*folder open*/
}

.tree-arrow .active > a .tree-folder:before {
    content: "\e113"; /*arrow up*/
}